[tor-relays] Arm phantom keystroke issue.

[ncl at cock.li]

Matt Helps:
> Hello.
> 
> The node we run is in our library and we have a raspberry pi SSH'ed into
> the node and an LCD displaying the output from Arm. Arm is bugging out on a
> random basis and appears to be receiving a C keystroke that I believe is
> the clear log command. I ran the pi with no keyboard and I even used
> another machine to display the ARM output from the SSH session and it did
> the same thing. Has anyone else seen this and is there a solution?
Yes, it's a known issue that has been in arm for a while, random
clobbering of the output and even random 'xx' and 'cc' commands.

> It's a
> real bummer because we use this as a learning tool in our library and the
> pretty graphs of incoming and outgoing traffic really get people
> interested. When this phantom keystroke happens the graphs stop and
> somebody has to press N on the keyboard to get the pretty graphs rolling
> again. This can happen in 2-3 hours or upto 12 hours. See pic here.
> http://imgur.com/a/wrMhT
A nasty fix might be to send a fake esc or ^L keystroke every minute or
so to restore normal output.